保留Yii gridview分页中的复选框值

Question

我有一个gridview,其中包含一个复选框列,并使用分页.当我检查第一页中的一些复选框并导航到第二页并在第二页中检查另一页时,我在第一页中检查的选项不会保留在那里.在分页期间保留复选框值是否可行？

Gridview的代码是

$widget = $this->widget('zii.widgets.grid.CGridView', array(
    'dataProvider'     => $model->search(),
    'cssFile'          => Yii::app()->baseUrl . '/media/js/admin/css/admingridview.css',
    //'filter' => $model,
    'ajaxUpdate'       => true,
    'enablePagination' => true,
    'columns'          => array(
        array(
            'name'   => 'id',
            'header' => '#',
            'value'  => '$this->grid->dataProvider->pagination->currentPage * $this->grid->dataProvider->pagination->pageSize + ($row+1)',
        ),
        array(
            'class'          => 'CCheckBoxColumn',
            'selectableRows' => '2',
            'header' => 'Selected',
        ),
        array(
            'name'   => 'fb_user_id',
            'header' => 'FaceBook Id',
            'value'  => 'CHtml::encode($data->fb_user_id)',
        ),
        array(
            'name'   => 'first_name',
            'header' => 'Name',
            'value'  => 'CHtml::encode($data->first_name)',
        ),
        array(
            'name'   => 'email_id',
            'header' => 'Email',
            'value'  => 'CHtml::encode($data->email_id)',
        ),
        array(
            'name'   => 'demo',
            'type'   => 'raw',
            'header' => "Select",
            'value'  => 'CHtml::checkBox("email[]","",array("class"=>"check","value"=>$data->email_id))',
        ),
    ),
));

编辑:

用于记住gridview中所选选项的扩展,请检查此链接Selgridview

感谢bool.dev

Answer 1

您可以使用会话/ cookie来存储选中的值.我不太确定如何使cookie工作,所以我会告诉你如何使用会话.特别是yii创建的用户会话.

现在使用会话我们需要将已检查(和未经检查)的id传递给控制器​​,因此我们将修改每次ajax更新(即分页之间)发送到控制器的数据,为此我们利用CGridView的beforeAjaxUpdate选项.

我也在你的代码中使用CCheckBoxColumn 而不是以下内容(当然你可以根据自己的需要修改解决方案):

array(
     'name' => 'demo',
     'type'=>'raw',
     'header' => "Select",
     'value' => 'CHtml::checkBox("email[]","",array("class"=>"check","value"=>$data->email_id))',
),

GridView更改:

<?php $this->widget('zii.widgets.grid.CGridView', array(
    // added id of grid-view for use with $.fn.yiiGridView.getChecked(containerID,columnID)
    'id'=>'first-grid',

    'dataProvider'=>$model->search(),
    'cssFile' => Yii::app()->baseUrl . '/media/js/admin/css/admingridview.css',

    // added this piece of code
    'beforeAjaxUpdate'=>'function(id,options){options.data={checkedIds:$.fn.yiiGridView.getChecked("first-grid","someChecks").toString(),
        uncheckedIds:getUncheckeds()};
        return true;}',

    'ajaxUpdate'=>true,
    'enablePagination' => true,
    'columns' => array(
            array(
                 'name' => 'id',
                 'header' => '#',
                 'value' => '$this->grid->dataProvider->pagination->currentPage * $this->grid->dataProvider->pagination->pageSize + ($row+1)',
            ),
            array(
                 'name' => 'fb_user_id',
                 'header' => 'FaceBook Id',
                 'value' => 'CHtml::encode($data->fb_user_id)',
            ),
            array(
                 'name' => 'first_name',
                 'header' => 'Name',
                 'value' => 'CHtml::encode($data->first_name)',
            ),
            array(
                 'name' => 'email_id',
                 'header' => 'Email',
                 'value' => 'CHtml::encode($data->email_id)',
            ),

            /* replaced the following with CCheckBoxColumn
              array(
                 'name' => 'demo',
                 'type'=>'raw',
                 'header' => "Select",
                 'value' =>'CHtml::checkBox("email[]","",array("class"=>"check","value"=>$data->email_id))',
              ),
            */

            array(
                 'class' => 'CCheckBoxColumn',
                 'selectableRows' => '2',
                 'header'=>'Selected',
                 'id'=>'someChecks', // need this id for use with $.fn.yiiGridView.getChecked(containerID,columnID)
                 'checked'=>'Yii::app()->user->getState($data->email_id)', // we are using the user session variable to store the checked row values, also considering here that email_ids are unique for your app, it would be best to use any field that is unique in the table
            ),
    ),
));
?>

特别注意代码beforeAjaxUpdate和CCheckBoxColumn,在beforeAjaxUpdate中,我们checkedIds作为所有id的csv字符串传递(在这种情况下是email_ids)已被检查,并uncheckedIds作为所有未经检查的id的csv字符串,我们得到未选中的框调用一个函数getUncheckeds(),紧接着.请注意这里,当我测试时,我使用了一个整数id字段(我的表)作为唯一字段,而不是电子邮件字段.

该getUncheckeds()功能可以在gridview的视图文件中的任何位置注册:

Yii::app()->clientScript->registerScript('getUnchecked', "
       function getUncheckeds(){
            var unch = [];
            /*corrected typo: $('[name^=someChec]') => $('[name^=someChecks]') */
            $('[name^=someChecks]').not(':checked,[name$=all]').each(function(){unch.push($(this).val());});
            return unch.toString();
       }
       "
);

在上面的功能中要注意选择器each和push功能.

完成后,我们需要修改此视图的控制器/操作.

public function actionShowGrid(){
     // some code already existing
     // additional code follows
     if(isset($_GET['checkedIds'])){
          $chkArray=explode(",", $_GET['checkedIds']);
          foreach ($chkArray as $arow){
               Yii::app()->user->setState($arow,1);
          }
     }
     if(isset($_GET['uncheckedIds'])){
          $unchkArray=explode(",", $_GET['uncheckedIds']);
          foreach ($unchkArray as $arownon){
               Yii::app()->user->setState($arownon,0);
          }
     }
     // rest of the code namely render()
}

就是这样,它现在应该可以工作了.